21 Nemetschek Engineering User Contest 2009 • Category 1: CAE Constructive Elements 1 Restoration study Winter Garden of Royal Greenhouses, Brussels Structural concept The Winter Garden is a glass and steel dome construction. The main construction contains 36 identical arches radiantly from a central point. The structure can be divided in three parts: the walk-round, the main dome and the small dome. The total height of the construction is 25 m, the diameter is 57 m. Project approach The study includes the identification of the geometrical and iron parameters of the structure, the determination of the symmetrical and asymmetrical load cases and combinations and the evaluation of the structural elements. Loading scheme Euro code 1 determines the permanent loads: • Self weight of iron main structure • Self weight of the secondary structure • Self weight of the glazing • External permanent loads Euro code 1 was used to determine variable loads: • Snow • Wind • Thermal loading • Service loads The complete analysis is carried out according to the actual European standards: the Euro codes EN1990, EN1991 and EN1993.
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